907632017-12-06Wavefront Sensing for a Segmented-Aperture Space Telescope CoronagraphCompletedOct 2016Sep 2017<p>Imaging terrestrial planets demands rigorous requirements on angular resolution and sensitivity.&nbsp; A large (&gt; 8 meter) segmented aperture telescope can provide a solution&nbsp;but only if several other enabling technologies are implemented simultaneously, such as a starlight suppression system, capable of dealing with a segmented aperture.&nbsp; This proposal develops the wavefront sensing and control (WFSC) component of a starlight suppression system, supporting both the WFIRST and the Large-Aperture UVOIR Space Telescope (LUVOIR) architectures.</p><p>The objective of the proposal is to develop the software architecture for the wavefront sensor.&nbsp; We will develop the sensor in the context of controlling the dynamical disturbances of a segmented primary as configured in a coronagraphic instrument.&nbsp; The software and algorithms will be developed, performance simulations performed, and then tested using open-loop processing of Testbed data, for a demonstration of TRL 4 (laboratory verification).&nbsp; The goal is to develop a parallel implementation the Deformable Mirror (DM) update algorithms and then demonstrate high contrast in the lab, at an update rate&nbsp;that is traceable to on-orbit stability requirements.&nbsp; These results will then be converted into an FPGA design&nbsp;(Field Programmable Gate Array).</p><p>This proposal develops the wavefront sensing and control (WFSC) component of a starlight suppression system, supporting both the WFIRST and the Large-Aperture UVOIR Space Telescope (LUVOIR) architectures.</p>33432468Science Instruments, Observatories, and Sensor Systems33018.3In-Situ Instruments and Sensors38288.3.3In-Situ (other)32468Science Instruments, Observatories, and Sensor Systems32998.1Remote Sensing Instruments and Sensors38198.1.3Optical Components33008.2Observatories38238.2.1Mirror Systems324810Nanotechnology340910.4Sensors, Electronics, and Devices386810.4.1Sensors and Actuators324911Modeling, Simulation, Information Technology and Processing341011.1Computing387111.1.1Flight ComputingOutside the Solar SystemFoundational KnowledgePlanned Mission (Pull)Center Independent Research & Development: GSFC IRADMission Support DirectorateGoddard Space Flight CenterGSFCNASA CenterGreenbeltMDMarylandTerence A DoironMegan E EckartTimothy D BeachBruce H Deanhttp://aetd.gsfc.nasa.gov/35373Development flow diagramImageDevelopment flow diagram26367https://techport.nasa.gov/file/26367102929